Re: [Patch v5] x86: irq_comm: Add check for RH bit in kvm_set_msi_irq

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On 19/03/2015 23:51, James Sullivan wrote:
> I played around with native_compose_msi_msg and discovered the following:
> 
> * dm=0, rh=0 => Physical Destination Mode
> * dm=0, rh=1 => Failed delivery
> * dm=1, rh=0 => Logical Destination Mode, No Redirection
> * dm=1, rh=1 => Logical Destination Mode, Redirection
> 
> So it seems to be the case that logical destination mode is used whenever
> DM=1, regardless of RH. Furthermore, the case where DM=0 and RH=1 is
> undefined, as was indicated in the closing response to the thread in
> https://software.intel.com/en-us/forums/topic/288883 :

So this means this patch is not necessary, right?

Paolo
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